This cut TextGeometry creation time almost by half.

Didn't help much, there is still a lot of garbage collection showing up in profiler (~18 %).

Also, real hotspot are loops in Shape.Utils.triangulateShape (with ~27% of total time spend on Vector2.equal). This maybe could be refactored with hashmaps.

- moved 3d-only text parameters from TextPath into TextGeometry
- added safeguard for bevelSize and bevelThickness not affecting shape size if bevel is disabled
- updated text examples as now TextGeometry is not anymore centered

Note: shadow maps as currently implemented are very fussy, they need tons of tweaking to look halfway decent. Also current implementation doesn't do proper depth normalization. For some reason this gives better results than the "right way".

Doesn't seem to produce visible difference.

Nine tap sampling, by default it's on, switch off with:

renderer.shadowMapSoft = false;

As normal map material now handles fog, it has to be enabled explicitly.

Corresponding keys:
 - R up
 - F down

Added Matrix4 type to uniforms. Fixed Texture cloning. Fixed uniforms cloning for Vector2, Vector4 and arrays.

Added path.createSpacedPointsGeometry() and extended shapes example to show such equidistantly sampled paths.

Spaced points are magic that will eventually make objects follow paths with constant speed.

This is a more proper way how to generate visual lines / vertices (all elements use single geometry).

Also extended shapes example to show how to use this with Line and ParticleSystem.

(per Qt API design suggestions http://developer.qt.nokia.com/wiki/API_Design_Principles)

Also some more whitespace cleanup.

Also cleaned up ExtrudeGeometry.